Brake for cars.



No. 729,658. PATENTED JUNE 2, 1903.

B. VON PHILP.

BRAKE FOR CARS.

APPLICATION FILED JAN. 22. 1963.

N0 MODEL.

1N VEN T 0R.

WITNESSES A TIOR/Vb I,

. I BY UNITED STATES:

Patented d'une 2, 190

PATENT OFFICE.

BERTIL VON PHILP, PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TWO-THIRDS' TO. J. WIGrGrANS TI IORNQ OF TRENTON, NEW JERSEY, AND HARRY L, OGDEN, OE PHILADELPHIA, PENNSYLVANIA.

BRAKE .FOR CARS, A

SPECIFICATION formingpart of Letters-Patent No. 729,658, dated June 2, 1903.

Application filed January 22,

To all whom it ntay concern:

Be it known that I, BERTIL VON PHIL1 ,a citizen of the United States, residing in the ,city

and county of Philadelphia, Stateof Pennsylvania, have invented a new and useful Improvement in Brakes for Cars, of which the following is a specification. I

My invention consists in an electric carbrake which is adapted to he applied to the motor thereof. I f

It further consists in providing means for the adjustment of the brake to allow for wearing away of the frictionalparts,

It further consists in novel details of 0011- struction, all as will be hereinafter fully set forth.

' Figure 1 represents a vertical sectional view of a portion of a hub connected with an armature-shaft of the casing therefor and the brake in position, said section beingtaken at a point represented by line 00 m, Fig. 2. Fig. 2 represents a horizontal sectional view on line y y, Fig. 1. view of one-half of the mechanism. a

Similar letters of reference indicate corresponding parts'in the figures.

Referring to the drawings, A designates a hub which is attached to an extension of the armature-shaft of the car-motor, said hub being provided with the ears or lugs B and ex tends into a casing C, which is suitably connected to the motor-casing in the present in stance by means of screws passing through the openings D, said casing 0 being provided with the lugs or extensions E. V

F designates disks which are suitably provided with noses or extensions G, whichare adapted to fit into or extend between the pro jections E 011 the casing, while interposed be- Fig. 3 represents a plan;

the motor.

1903. Serial No. 140,060. (No model.)

connected with the casing C and with a boX .M by means of the screws N, said box M having a chamber P therein, the washer L forming the bottom or lower wall of said chamber,

said box M also having a central bore Q, in which is'situated a spring R, which is adapt- .ed to bear against the transmitter K, the opposite end of said spring bearing against a gland S, which is held in position, with respect to the casing, by means of the screws and which isof such strength as to overcome the power of; the spring when the current is applied. I

The operation will be readily understood. when the current is applied, the coil operates to draw the transmitter K away from the disks, whereby the same can move freely with respect to each other-that is, the disks H, which are keyed to the hub A, are permitted to turn therewith, whereby the motion of the motor ispermitted; but as soon as the power is shut off the spring R immediately actuates the transmitter in the opposite direction and presses the disks F and II together, thus pre venting the rotation of the same and stopping the movement of the hub, and consequently If desired, I may connect the operating of the brake with a switch, in which event I employ the wires W, which connect with a suitable switch, so that the brake can be operated-as desired.

' It will be evident that various changes may be made by those skilled in the art which will come within the scope of my invention,

and I do not, therefore, desire to be limited .111. every instance to the exact construction herein shown and described.

Having thus described myinveritiomfihat I claim as new, and desire to secure by Letters Patent, isi 1. In a device of; the kind specified, a disk suitably connected with the armature shaft or motor, a second disk suitably connected with a stationary portion, a transmitter, a spring bearing directly upon said transmitter, a coil adapted to overcome the force of the spring when the current is applied, whereby the disks can rotate withrespect to each other and means interposed between said coil and the transmitter.

2. In a device of the kind specified, a disk suitably connected with the armature shaft or motor, a second disk suitably connected with a stationary portion, a transmitter, a spring bearing directly upon said transmitter, an electromagnet adapted to overcome the force of the spring when the current is applied, whereby the disks can rotate with respect to each other, a washer interposed between said electromagnet and the transmitter, means securing said washer between the adjacent ends of the casing of said magnet and of said disks, and means for varying the tension of said spring.

3. In a device of the kind specified, a casing, a hub extending thereinto, disks having extensions fitting between projections on the in ner wall of said casing, disks having extensions disposed between lugs 011 the hub, a transmitter covering the end of said hub and bearing against the adjacent disk, a box having a chamber, a coil therein, a spring disposed centrally within said box and bearing directly against said transmitter, means interposed between said transmitter and coil and means interposed between said box and casing and having an aperture through which said spring works.

4. Ina device of the kind specified, a casing having inwardly-projecting lugs, a hub having lugs within said casing, disks having extensions fitted between the lugs of the casing, disks having extensions fitted between the lugs of the hub, a transmitter covering the inner end of the hub and bearing directly against the adjacent disk, a washer surrounding said transmitter and bearing against the casing, a box bearing again st said washer and having central bore, a spring within said bore bearing directly against the center of the transmitter, means connected with said box and bearing directly against the spring, means for adjusting the tension of said spring and a coil within said box and adapted to overcome the power'of the spring when the current is applied.

BERTIL VON PHILP. 

